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| 荒漠藓类结皮层中齿肋赤藓形态结构适应性及其原丝体发育特征 | |
| 引用本文： | 郑云普,赵建成,张丙昌,张元明,ZHANG Yuan-ming.荒漠藓类结皮层中齿肋赤藓形态结构适应性及其原丝体发育特征[J].中国沙漠,2009,29(5):878-884. |
| 作者姓名： | 郑云普 赵建成 张丙昌 张元明 ZHANG Yuan-ming |
| 作者单位： | 1. 河北师范大学,生命科学学院,河北,石家庄,050016;中国科学院,地理科学与资源研究所,北京,100101;中国科学院,研究生院,北京,100049 2. 河北师范大学,生命科学学院,河北,石家庄,050016 3. 中国科学院,新疆生态与地理研究所,新疆,乌鲁木齐,830011 |
| 基金项目： | 国家自然科学基金，河北省自然科学基金，中国科学院知识创新工程重要方向性项目，中国科学院研究生科学与社会实践资助项目，古尔班通古特沙漠藻类分布规律调查资助项目 |
| 摘 要： | 在实验室内通过光镜与扫描电镜相结合的手段观察了新疆古尔班通古特沙漠藓类结皮层的优势物种——齿肋赤藓(Syntrichia caninervis Mitt.)的形态结构特征及其原丝体发育的全过程,并分别从藓类植物生长发育所必经的配子体和原丝体两个阶段对齿肋赤藓形态结构与荒漠干旱的生态环境之间的适应性关系进行了探讨。研究结果表明,①植物体密集丛生;叶片边缘强烈背卷,两面均具马蹄形细疣;中肋粗壮并突出叶尖成白色长毛尖。②原丝体系统的细胞短粗,细胞质高度浓缩,液泡较小,细胞壁较厚;原丝体系统具有短枝群。 |
| 关 键 词： | 藓类结皮层 齿肋赤藓 形态结构 适应性 原丝体发育 |
| 收稿时间： | 2008-1-22 |
Morphological and Structural Adaptation and Characteristics of Protonemal Development of Syntrichia caninervis in the Mosses Crust Layer |
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| ZHENG Yun-pu,ZHAO Jian-cheng,ZHANG Bing-chang,XU Ming,ZHANG Yuan-ming.Morphological and Structural Adaptation and Characteristics of Protonemal Development of Syntrichia caninervis in the Mosses Crust Layer[J].Journal of Desert Research,2009,29(5):878-884. | |
| Authors: | ZHENG Yun-pu ZHAO Jian-cheng ZHANG Bing-chang XU Ming ZHANG Yuan-ming |
| Institution: | 1.College of Life Science, Hebei Normal University, Shijiazhuang 050016, China; 2.Institute of Geographical Sciences and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China; 3.Graduate University, Chinese Academy of Sciences, Beijing 100049, China; 4.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China |
| Abstract: | Syntrichia caninervis serves as one of the commonly dominant species in moss crust in Gurbantunggut Desert. In this paper, its morphology and structure as well as the protonema characteristics of Tortula desertorum are observed under light microscopy and scanning electron microscopy. Furthermore, the adaptive relationships between the droughty environments and the morphology and structure of xerophic mosses are analyzed for the gametophyte stage to the protonema stage. The results indicated that Syntrichia caninervis species mostly develop in cluster; the edge of leaves obviously roll to back and the both surfaces have horse-hoof-like warts; the coarse costa extrudes into awn. In addition, the results also showed that the cells of the protonemata are podgy and the cytoplasm is seriously concentrated, with small vacuole and thick cell wall; the protonemata has short branches. |
| Keywords: | moss crust Syntrichia caninervis morphology and structure adaptation protonemal development |
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